I had used this samsung galaxy tab 4 10.1 LTE.last two months ago .It has single sim.It has big 10.1 TFT display.resoulation 1280* 800 pixels .This is Os v 4.4.2 Android kitkat verision.It has 1.2ghz Quad core processor.It has low 1.5gb ram .interal storage is 16gb.It was supports up to 64 gb expandable memory.It has poor quality 3.15 mp camera.It has low quality 1.3mp front camera.Not desined very well.It looks not good .value of rupees is high cost to compare the other mobiles.It has non-removable battery It not usful to change when battery gets damage.And it has no Radio.